Saddle-shaped semi-rigid cable network structure

Abstract

The invention discloses a saddle-shaped semi-rigid cable network structure. The network structure comprises beam strings arranged in the forward stress direction, beam strings arranged in the reversestress direction and boundary ring beams; upper string rigid components of all the forward beam strings form a saddle-shaped concave face, upper string inhaul cables of all the reverse beam strings form a saddle-shaped convex face, lower string inhaul cables of all the forward beam strings and lower string rigid components of all the reverse beam strings form a concave elliptic paraboloid, the forward beam strings and the reverse beam strings share one supporting rod at the intersection, the upper ends of the supporting rods are connected with the upper string rigid components of the forward beam strings, the lower ends of the supporting rods are connected with the lower string rigid components of the reverse beam strings, the lower string rigid components of the reverse beam strings are connected with the lower string inhaul cables of the forward beam strings, and the upper string inhaul cables of the reverse beam strings are connected with the upper string rigid components of the forward beam strings. The saddle-shaped semi-rigid cable network structure has the advantages of good stress performance, high stress efficiency and low construction difficulty.

Description

technical field [0001] The invention belongs to the technical field of construction engineering and relates to a large-span venue building roof structure, more specifically to a saddle-shaped semi-rigid cable net structure. Background technique [0002] Saddle surface, also known as hyperbolic paraboloid, is a curved surface produced by linear motion, and has two families of straight generatrixes; from the nature of hyperbolic paraboloids, any two straight generatrixes of different races on the curved surface intersect. When the curved surface is stressed, any straight generatrix will be shared by the other straight generatrix, and the interaction makes the structure more stable. Using a hyperbolic paraboloid as the structural roof can obtain good structural mechanical performance. The saddle-faced roof also has a simple and smooth shape, and can be used in large-span building structures such as stadiums to obtain beautiful architectural shapes. Therefore, it is favored by d...

AI Technical Summary

Problems solved by technology

However, the string beam structure is also a wind-sensitive structure. Under the action of wind suction, the internal force of the lower cable in the string beam structure decreases. In order to prevent the cable from slack and quitting work, it is often necessary to increase the cable prestress

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